Selective signaling system.



H. 0. HUGE. SELECTIVE SIGNALING SYSTEM.

APPLICATION F ILBD 128.15, 1909. I

Patented July 19, 1910.

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i designed UNITED s'rnrns PATENT orrron,

HARRY o. BUGH, or sannwrcn, rumors, assrenon 'ro sannwrcn ELEGTRIC 60111:, or: sanit ion, rumors, a coaronarron or rum-nets.

series srennmno s'rs'rnm Specification of Letters Patent. Patented July 19, 1910; Application filed February 15, 19,09. Serial No. 476,085. I

To; all wh m i my camera:

Be it known that I, HARRY O. RUGH, citizen oil the United States, residing at Sandwich, in the county of Dekalb and State of, Illinois, have invented a certain new and useful, Improvement in Selective Signaling Systems, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My. invention relates to signaling systems, and more particularly to signaling systems as applied for use along a railway right-ofwary,,and has tor its object the provision of an improved device for selectively calling the various stations from a central office.

I will describe my invention more in do taiLby reference to the accompanying drawing illustrating the preferred embodiment thereof. I have there shown a line circuit consisting of the line wires 1 and 2, which unites the central station A with the various substations B, C and I). The line wires 1 and 2 are joined, at both extremities through v impedance coils 3 and i, which impedance over the line, contact 18 is included in the coils are esigned to prevnt the passage circuit to actuate relay 28, which thereby therethrough of telephoniccurrents in su releases the step-up mechanism 23,- and alcient quantity to disturb proper intercomlows it to come tonormal through the munication between the various telephone agency of the spring 29. Nhen the step-up sets at the various stations, which telephone mechanism sets consist of the transmitter 5, battery 6,

comes to normal, it opens contact through the spring 30, thus preventing induction coil 7, condenser '8, the switch- These telephone the further actuation by negative impulses of the relay 28. It will be seen from this that sets are bridged across the line circuitof the various stations. At the centralstation the polarized relay 15 has two coils, one COll telephone, in addition to the telephone set having a terminal connected to the line conductorl, and the other coil having a ter- A, shown, there are also provided two generaters 11 and 12 having one terminal con- ;points 1.7 and 18, leading directly to wires 19 and, 20, respectively, with. an additional third wire 21 connected to the armature 16, itself. Thus, when positive currents are transmitted over. the line conductors,,contactpoint 17 is included in circuit to actuate the relay 22, thereby to step upthe stepup mechanism 23, which. stcpmp mechanism is provided with a contact lever 24, adapted to engage contact spring 25, when it is inthe proper position, thus to operate a local signal 26. The arms 24: are, of in different positions angnlarly, so that the desired station can upon the number of impulses transm t over the line to actuate the relay 22. Alocal relay 27 serves to close the circuit through the signal 26. It will be apparent that the impulses to relays 22 must be short in duration, so that when station I), for instance, is wanted, the contact arms 24, in passing :their springs 25, at other stations, will not make contact long enough to permit the slow-acting relays 27 to close \iVhen negative impulses are transmitted.

minal connected to the line conductor While I have herein shown and described nected to the ground, and having keys 13 the preferred embodiment of my invention, and 14, which are adapted, respectively, to I do not limit myself to the particular conconnect either one generator or the other struction I have shown, but having set forth what I claim as Letters Patits most salient generator to the line conductors 1 and 2, I

new and des re features,

thereby to send impulses over said conto secure by to affect the olarized relays 15, which are likewise bri ged across the line conductors 1 and 2,, atvthe Various substations to ground,

The polarized relays are provided with an armaturelti, in association with contact by step selector at each substation, electromagnetic means at each selector mechanism for operating same, having two coils, one having a terminal connected to one'lint conductor and the other having a terminal. connected to the other line conductor, contactcourse,

their circuits ductors, which impulses are either of a posicut is: .tive or negative character, depending upon 1. A selective signaling system comprising whether the key 13 or key 14 is depressed. a central station and a plurality of substa- These positive and negative impulses are tions united by two line conductors, astep points underthe control of said electro-magelectro-magnetic netic means, an

by-step selector mechanism, and tive inclusion of the serving to restore said selector to normal, magnets interposed between said contact points and said selector mechanisms, and a source of current at the central station for selectively operating said electromagnetic means.

21 A selective signaling system comprising acentral staticnand a plurality of substations united by two line conductors, a step-by-step selector at each substation, means at each selector for operating same, having two coils, one having a terminal connected to one line conductor and the other having a terminal connected to the other line conductor, contact "points under the control of said electro-magnetic selector to normal, sired contact point dependingupon the polarity ofthe current from the. central station, and sources of positive and negative current at the central station for selectively operating said electro-magnetic means.

selective signaling system comprising a central station and a plurality of substations united by two line conductors, a step-bystep selector at each substation; electro-magnetic means at each selector for operating same, havin two coils, one having a terminal connecte. to one line conductor and the other having a terminal connected to the other line conductor, contact points under the control of said electro-magnetic means, an operative inclusion of one contact point serving to step up the step-by-step selector, and the operative inclusion of the other contact tact points and said selectors, and sources of positive and negative current at the central station for selectively operating said electromagnetic means.

4. A selective signaling system comprising a central station and a p urality of substations united by two line conductors, a

= step-by-step selector at each substation, elecro-magnet1c means at each selector for operhaving two coils, one having a conductor and the other having a terminal the other line conductor, contact; points under the control. of said electro-magnetic means, an operative inclusion at one contact point serving to stepup the step-bypolarity stations serving to restore said normal, magnets interposed between said said magnets,

step selector, andthe operative inclusion of the other contact point serving to restore fsaidselector to normal, the selection of the desired contact point depending upon the of the current from the central statlon, magnets inter osed between said contact points and sai selectors, local batteries for operating said magnets, and sources of positive and negative current at the central station for selectively operating said electromagnetic means.

5. A selective signaling ing a central station and a plurality of sub united by two line conductors, a step-by-step selector mechanism at each substation, clectro-magnetic means at each Selector 'mcchanism for operating same in bridge connectionwith the line conductors, contact points under the control of said elect'ro-magnetic means,fan operative inclusion of one contact point serving to ste -up the step-by-step selector mechanism, an the operative inclusion of the other contact point selector mechanism to system compriscontact points and said selector mechanisms, and a source of current at the central station for selectively operating said electromagnetic means.

6. A selective signalingv system comprising a central station and a plurality of substations united by two line conductors a step-by-step selector at each substation, electro-magnetic means at each selector for operating same in bridge connection with the line conductors, contact points under the control of said electromagnetic means, an operative inclusion of one contact point serving to step up the step-by-step selector,

and the operative inclusion of the other con tact polnt serving to restore said selector to normal, the selection of thedesired contact point depending upon the polarity of the current from the central station, and sources of positive and negative current at the central station for selectively operating said electro-magnetic means.

selective signaling system comprising a central station and a plurality of substations united by two line conductors, a step-by-step selector at each substation, electro-magnetic means at each selector for op,- erating same in bridge connection with the line conductors, contact points under the control of said electro-magnetic means, an operative inclusion of one contact point serving to step up the step-by-step selector, and the operative inclusion of the other contact point servingto restore said selector to normal, the selection of the desired contact connected to upon the polar ty of the terposed between said contact points and said selectors local batteries for operating and sources Jof positive and negative current at the central station for selectively operating said electro-magnetie means.

8. A selective signaling system comprising a central station and a plurality of substations united by tWo line conductors, a step-by-step selector mechanism at each substation, electro-niagnetic means at each selector for operating same in bridge connection With the line conductors, contact points under the control of said electro-magnetic means, an operative inclusion of one contact point serving to step-up the step-by-step selector mechanism, and the operative inclusion of the other contact point serving to restore said selector, mechanism to normal,

depending upon the polarity of the current from the central'station, magnets interposed between said contact points and said selector mechanism, and sources of positive and negative current at the central station for selectively operating said electro magnetic means. Y

In Witness whereof, I hereunto subscribe any name this 19th day of January, A. D., 909. e

HARRY o. RUGH.

Witnesses:

MAX W. ZABEL, O. M. WENNICH.

the selection of the desired contact point 

